高级定时器TIM1输出PWM波高级定时器TIM1输出PWM波

高级定时器（TIM1和TIM8）相较于通用定时器，它的函数配置更多，一个都不能少，否则输出不了PWM波，所以在此写下通用定时器和高级定时器PWM波配置的区别，以记录问题。
通用定时器TIM3通道1配置

void TIM3_CH1_PWM_Init(u16 per,u16 psc) { TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure; TIM_OCInitTypeDef TIM_OCInitStructure; GPIO_InitTypeDef GPIO_InitStructure; /* 开启时钟 */ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC,ENABLE); RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3,ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE); /*配置GPIO的模式和IO口 */ GPIO_InitStructure.GPIO_Pin=GPIO_Pin_6; GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP; //复用推挽输出 GPIO_Init(GPIOC,&GPIO_InitStructure); GPIO_PinRemapConfig(GPIO_FullRemap_TIM3,ENABLE); //改变指定管脚的映射 TIM_TimeBaseInitStructure.TIM_Period=per; //自动装载值 TIM_TimeBaseInitStructure.TIM_Prescaler=psc; //分频系数 TIM_TimeBaseInitStructure.TIM_ClockDivision=TIM_CKD_DIV1; TIM_TimeBaseInitStructure.TIM_CounterMode=TIM_CounterMode_Up; //设置向上计数模式 TIM_TimeBaseInit(TIM3,&TIM_TimeBaseInitStructure); TIM_OCInitStructure.TIM_OCMode=TIM_OCMode_PWM1; TIM_OCInitStructure.TIM_OCPolarity=TIM_OCPolarity_Low; TIM_OCInitStructure.TIM_OutputState=TIM_OutputState_Enable; TIM_OC1Init(TIM3,&TIM_OCInitStructure); //输出比较通道1初始化 TIM_OC1PreloadConfig(TIM3,TIM_OCPreload_Enable); //使能TIMx在 CCR1 上的预装载寄存器 TIM_ARRPreloadConfig(TIM3,ENABLE); //使能预装载寄存器 TIM_CtrlPWMOutputs(TIM3,ENABLE); TIM_Cmd(TIM3,ENABLE); //使能定时器 }

【高级定时器TIM1输出PWM波】高级定时器TIM1通道1的配置

void TIM1_CH1_PWM_Init(u16 per,u16 psc) { GPIO_InitTypeDef GPIO_InitStructure; TIM_TimeBaseInitTypeDefTIM_TimeBaseStructure; TIM_OCInitTypeDefTIM_OCInitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA , ENABLE); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOA, &GPIO_InitStructure); TIM_TimeBaseStructure.TIM_Period = per; TIM_TimeBaseStructure.TIM_Prescaler =psc; TIM_TimeBaseStructure.TIM_ClockDivision = 0; TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure); //此处结构体必须全部配置，否则输出不了PWM波！！！！ TIM_OCInitStructure.TIM_Pulse = 0; //待装入捕获比较寄存器的脉冲值 TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //TIM1脉冲宽度调制模式1 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //使能输出比较状态 TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable; //使能输出比较N状态 TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //TIM1 输出比较极性高 TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High; //TIM1 输出比较N极性高 TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Reset; //当 MOE=0 重置 TIM1 输出比较空闲状态 TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Reset; //当 MOE=0 重置 TIM1 输出比较 N 空闲状态 TIM_OC1Init(TIM1, &TIM_OCInitStructure); //输出比较通道1初始化 TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable); //使能TIMx在 CCR1 上的预装 TIM_ARRPreloadConfig(TIM1, ENABLE); //使能预装载寄存器 TIM_CtrlPWMOutputs(TIM1,ENABLE); TIM_Cmd(TIM1, ENABLE); //使能定时器 }